The particularly authentic appearance of vario is achieved through different elaborate brick production technologies. Soft colour transitions are achieved by adding several types of powdered clay and engobes in combination with reduction or oxidation firing. The result is a really unique, natural colour. Depending on the basic brick clay, the effect can be striking or discrete but always particularly harmonious. Moreover, the unconventional veined structure, with its hand-made appearance, emphasises the rich and varied character of this brick.